<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" type="text/css" href="./css/base.css">
<script type="text/javascript" src="./node_modules/jquery/dist/jquery.js"></script>
<script type="text/javascript" src="./js/codergege.js"></script> 
<script type="text/javascript" src="./js/3.js"></script> 
<style>
a { text-decoration: none; display: inline-block; width 60px; height: 30px; 
	border: 1px solid #ccc; line-height: 30px; text-align: center; }
.menu { width: 100px; height: 200px; background: red; display: none; }
</style>
</head>
<body>
<a id="mn" href="#">菜单</a>
<div class="menu"></div>
</body>
</html>
